<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css"></style>
		<script type="text/javascript">
			let num1 = 10;
			let num2 = 5;
		
			
			let name = 'jshand';
			
			
			//数字 跟  bool  true 1 
			console.log("num1 + true " , num1 + true)
			console.log("num1 + false " , num1 + false)

			//字符串拼接
			let introduce = "我的年龄是"+18+" 姓名是 jshand";
			let introduce1 = "我後面是 bool:"+true;
			
			console.log("introduce",introduce)
			console.log("introduce1",introduce1);
			console.log("typeof introduce1",typeof introduce1);
			
			
			
			
			
		</script>
	</head>
	<body>


	</body>
</html>